Light emission enhancement of GaN-based photonic crystal with ultraviolet AlN/AlGaN distributed Bragg reflector

Cheng Chang Chen*, Jun Rong Chen, Yi Chun Yang, M. H. Shih, Hao-Chung Kuo

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

In this study, we demonstrated two-dimensional (2-D) photonic crystal band-edge coupling operation in the ultraviolet wavelength range. The light extraction enhancement was obtained from the photonic crystal structure with an ultraviolet AlN/AlGaN distributed Bragg reflector (UVDBR). The DBR provides a high reflectivity of 85% with 15-nm stopband width. A fivefold enhancement in photoluminescence emission was also achieved compared with the emission from the unpatterned area on the same sample at 374 nm wavelength. We also study the photonic crystal bandedge coupling with finite-difference time-domain and plane-wave expansion methods.

Original languageEnglish
Article number5593859
Pages (from-to)3189-3192
Number of pages4
JournalJournal of Lightwave Technology
Volume28
Issue number22
DOIs
StatePublished - 17 Nov 2010

Keywords

  • Band-edge coupling
  • photonic crystal
  • ultraviolet distributed Bragg reflector (UVDBR)

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